mirror of
https://github.com/Mikaela/Limnoria.git
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626 lines
24 KiB
Python
626 lines
24 KiB
Python
###
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# Copyright (c) 2002-2004, Jeremiah Fincher
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# Copyright (c) 2008-2010, James McCoy
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# Copyright (c) 2014, Valentin Lorentz
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions, and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions, and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the author of this software nor the name of
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# contributors to this software may be used to endorse or promote products
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# derived from this software without specific prior written consent.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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###
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import re
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import os
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import sys
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import json
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import time
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import types
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import string
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import socket
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import threading
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import feedparser
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import supybot.conf as conf
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import supybot.utils as utils
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import supybot.world as world
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from supybot.commands import *
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import supybot.utils.minisix as minisix
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import supybot.ircmsgs as ircmsgs
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import supybot.ircutils as ircutils
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import supybot.registry as registry
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import supybot.callbacks as callbacks
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from supybot.i18n import PluginInternationalization, internationalizeDocstring
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_ = PluginInternationalization('RSS')
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if world.testing:
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INIT_DELAY = 1
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else:
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INIT_DELAY = 10
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if minisix.PY2:
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from urllib2 import ProxyHandler
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else:
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from urllib.request import ProxyHandler
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def get_feedName(irc, msg, args, state):
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if irc.isChannel(args[0]):
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state.errorInvalid('feed name', args[0], 'must not be channel names.')
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if not registry.isValidRegistryName(args[0]):
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state.errorInvalid('feed name', args[0],
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'Feed names must not include spaces.')
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state.args.append(callbacks.canonicalName(args.pop(0)))
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addConverter('feedName', get_feedName)
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announced_headlines_filename = \
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conf.supybot.directories.data.dirize('RSS_announced.flat')
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def only_one_at_once(f):
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lock = [False]
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def newf(*args, **kwargs):
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if lock[0]:
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return
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lock[0] = True
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try:
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f(*args, **kwargs)
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finally:
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lock[0] = False
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return newf
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class InvalidFeedUrl(ValueError):
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pass
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class Feed:
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__slots__ = ('url', 'name', 'data', 'last_update', 'entries',
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'etag', 'modified', 'initial',
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'lock', 'announced_entries', 'last_exception')
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def __init__(self, name, url, initial,
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plugin_is_loading=False, announced=None):
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assert name, name
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if not url:
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if not utils.web.httpUrlRe.match(name):
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raise InvalidFeedUrl(name)
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url = name
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self.name = name
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self.url = url
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self.initial = initial
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self.data = None
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# We don't want to fetch feeds right after the plugin is
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# loaded (the bot could be starting, and thus already busy)
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self.last_update = 0
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self.entries = []
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self.etag = None
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self.modified = None
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self.lock = threading.Lock()
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self.announced_entries = announced or \
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utils.structures.TruncatableSet()
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self.last_exception = None
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def __repr__(self):
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return 'Feed(%r, %r, %b, <bool>, %r)' % \
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(self.name, self.url, self.initial, self.announced_entries)
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def get_command(self, plugin):
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docstring = format(_("""[<number of headlines>]
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Reports the titles for %s at the RSS feed %u. If
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<number of headlines> is given, returns only that many headlines.
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RSS feeds are only looked up every supybot.plugins.RSS.waitPeriod
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seconds, which defaults to 1800 (30 minutes) since that's what most
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websites prefer."""), self.name, self.url)
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def f(self2, irc, msg, args):
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args.insert(0, self.name)
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self2.rss(irc, msg, args)
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f = utils.python.changeFunctionName(f, self.name, docstring)
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f = types.MethodType(f, plugin)
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return f
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_sort_parameters = {
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'oldestFirst': (('published_parsed', 'updated_parsed'), False),
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'newestFirst': (('published_parsed', 'updated_parsed'), True),
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'outdatedFirst': (('updated_parsed', 'published_parsed'), False),
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'updatedFirst': (('updated_parsed', 'published_parsed'), True),
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}
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def _sort_arguments(order):
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(fields, reverse) = _sort_parameters[order]
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def key(entry):
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for field in fields:
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if field in entry:
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return entry[field]
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raise KeyError('No date field in entry.')
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return (key, reverse)
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def sort_feed_items(items, order):
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"""Return feed items, sorted according to sortFeedItems."""
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if order == 'asInFeed':
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return items
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(key, reverse) = _sort_arguments(order)
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try:
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sitems = sorted(items, key=key, reverse=reverse)
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except KeyError:
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# feedparser normalizes required timestamp fields in ATOM and RSS
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# to the "published"/"updated" fields. Feeds missing it are unsortable by date.
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return items
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return sitems
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def load_announces_db(fd):
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return dict((name, utils.structures.TruncatableSet(entries))
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for (name, entries) in json.load(fd).items())
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def save_announces_db(db, fd):
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json.dump(dict((name, list(entries)) for (name, entries) in db), fd)
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class RSS(callbacks.Plugin):
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"""This plugin is useful both for announcing updates to RSS feeds in a
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channel, and for retrieving the headlines of RSS feeds via command. Use
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the "add" command to add feeds to this plugin, and use the "announce"
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command to determine what feeds should be announced in a given channel."""
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threaded = True
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def __init__(self, irc):
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self.__parent = super(RSS, self)
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self.__parent.__init__(irc)
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if world.starting:
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self._init_time = time.time() # To delay loading the feeds
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else:
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self._init_time = 0
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# Scheme: {name: url}
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self.feed_names = callbacks.CanonicalNameDict()
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# Scheme: {url: feed}
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self.feeds = {}
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if os.path.isfile(announced_headlines_filename):
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with open(announced_headlines_filename) as fd:
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announced = load_announces_db(fd)
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else:
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announced = {}
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for name in self.registryValue('feeds'):
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self.assert_feed_does_not_exist(name)
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self.register_feed_config(name)
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try:
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url = self.registryValue(registry.join(['feeds', name]))
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except registry.NonExistentRegistryEntry:
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self.log.warning('%s is not a registered feed, removing.',name)
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continue
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try:
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self.register_feed(name, url, True, True, announced.get(name, []))
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except InvalidFeedUrl:
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self.log.error('%s is not a valid feed, removing.', name)
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continue
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world.flushers.append(self._flush)
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def die(self):
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self._flush()
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world.flushers.remove(self._flush)
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self.__parent.die()
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def _flush(self):
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l = [(f.name, f.announced_entries) for f in self.feeds.values()]
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with utils.file.AtomicFile(announced_headlines_filename, 'w',
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backupDir='/dev/null') as fd:
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save_announces_db(l, fd)
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##################
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# Feed registering
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def assert_feed_does_not_exist(self, name, url=None):
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if self.isCommandMethod(name):
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s = format(_('I already have a command in this plugin named %s.'),
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name)
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raise callbacks.Error(s)
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if url:
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feed = self.feeds.get(url)
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if feed and feed.name != feed.url:
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s = format(_('I already have a feed with that URL named %s.'),
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feed.name)
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raise callbacks.Error(s)
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def register_feed_config(self, name, url=''):
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self.registryValue('feeds').add(name)
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group = self.registryValue('feeds', value=False)
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conf.registerGlobalValue(group, name,
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registry.String(url, """The URL for the feed
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%s. Note that because
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announced lines are cached,
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you may need to reload this
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plugin after changing this
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option.""" % name))
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feed_group = conf.registerGroup(group, name)
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conf.registerChannelValue(feed_group, 'format',
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registry.String('', _("""Feed-specific format. Defaults to
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supybot.plugins.RSS.format if empty.""")))
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conf.registerChannelValue(feed_group, 'announceFormat',
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registry.String('', _("""Feed-specific announce format.
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Defaults to supybot.plugins.RSS.announceFormat if empty.""")))
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conf.registerGlobalValue(feed_group, 'waitPeriod',
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registry.NonNegativeInteger(0, _("""If set to a non-zero
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value, overrides supybot.plugins.RSS.waitPeriod for this
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particular feed.""")))
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def register_feed(self, name, url, initial,
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plugin_is_loading, announced=None):
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self.feed_names[name] = url
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self.feeds[url] = Feed(name, url, initial,
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plugin_is_loading, announced)
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def remove_feed(self, feed):
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del self.feed_names[feed.name]
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del self.feeds[feed.url]
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conf.supybot.plugins.RSS.feeds().remove(feed.name)
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conf.supybot.plugins.RSS.feeds.unregister(feed.name)
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##################
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# Methods handling
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def isCommandMethod(self, name):
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if not self.__parent.isCommandMethod(name):
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return bool(self.get_feed(name))
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else:
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return True
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def listCommands(self):
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return self.__parent.listCommands(self.feed_names.keys())
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def getCommandMethod(self, command):
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try:
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return self.__parent.getCommandMethod(command)
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except AttributeError:
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return self.get_feed(command[0]).get_command(self)
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def __call__(self, irc, msg):
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self.__parent.__call__(irc, msg)
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threading.Thread(target=self.update_feeds).start()
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##################
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# Status accessors
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def get_feed(self, name):
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return self.feeds.get(self.feed_names.get(name, name), None)
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def is_expired(self, feed):
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assert feed
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period = self.registryValue('waitPeriod')
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if feed.name != feed.url: # Named feed
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specific_period = self.registryValue('feeds.%s.waitPeriod' % feed.name)
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if specific_period:
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period = specific_period
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event_horizon = time.time() - period
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return feed.last_update < event_horizon
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###############
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# Feed fetching
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def update_feed(self, feed):
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handlers = []
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if utils.web.proxy():
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handlers.append(ProxyHandler(
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{'http': utils.force(utils.web.proxy())}))
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handlers.append(ProxyHandler(
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{'https': utils.force(utils.web.proxy())}))
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with feed.lock:
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d = feedparser.parse(feed.url, etag=feed.etag,
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modified=feed.modified, handlers=handlers)
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if 'status' not in d or d.status != 304: # Not modified
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if 'etag' in d:
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feed.etag = d.etag
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if 'modified' in d:
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feed.modified = d.modified
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feed.data = d.feed
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feed.entries = d.entries
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feed.last_update = time.time()
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# feedparser will store soft errors in bozo_exception and set
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# the "bozo" bit to 1 on supported platforms:
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# https://pythonhosted.org/feedparser/bozo.html
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# If this error caused us to e.g. not get any entries at all,
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# it may be helpful to show it as well.
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if getattr(d, 'bozo', 0) and hasattr(d, 'bozo_exception'):
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feed.last_exception = d.bozo_exception
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else:
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feed.last_exception = None
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(initial, feed.initial) = (feed.initial, False)
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self.announce_feed(feed, initial)
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def update_feed_if_needed(self, feed):
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if self.is_expired(feed) and \
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self._init_time + INIT_DELAY < time.time():
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self.update_feed(feed)
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@only_one_at_once
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def update_feeds(self):
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announced_feeds = set()
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for irc in world.ircs:
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for channel in irc.state.channels:
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announced_feeds |= self.registryValue('announce', channel)
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for name in announced_feeds:
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feed = self.get_feed(name)
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if not feed:
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self.log.warning('Feed %s is announced but does not exist.',
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name)
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continue
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self.update_feed_if_needed(feed)
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def get_new_entries(self, feed):
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# http://validator.w3.org/feed/docs/rss2.html#hrelementsOfLtitemgt
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get_id = lambda entry: entry.id if hasattr(entry, 'id') else (
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entry.title if hasattr(entry, 'title') else entry.description)
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with feed.lock:
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entries = feed.entries
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new_entries = [entry for entry in entries
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if get_id(entry) not in feed.announced_entries]
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if not new_entries:
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return []
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feed.announced_entries |= set(get_id(entry) for entry in new_entries)
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# We keep a little more because we don't want to re-announce
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# oldest entries if one of the newest gets removed.
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feed.announced_entries.truncate(10*len(entries))
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return new_entries
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def announce_feed(self, feed, initial):
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new_entries = self.get_new_entries(feed)
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order = self.registryValue('sortFeedItems')
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new_entries = sort_feed_items(new_entries, 'newestFirst')
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for irc in world.ircs:
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for channel in irc.state.channels:
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if feed.name not in self.registryValue('announce', channel):
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continue
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if initial:
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max_entries = \
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self.registryValue('initialAnnounceHeadlines', channel)
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else:
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max_entries = \
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self.registryValue('maximumAnnounceHeadlines', channel)
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announced_entries = new_entries[0:max_entries]
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announced_entries = sort_feed_items(announced_entries, order)
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for entry in announced_entries:
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self.announce_entry(irc, channel, feed, entry)
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#################
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# Entry rendering
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def should_send_entry(self, channel, entry):
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whitelist = self.registryValue('keywordWhitelist', channel)
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blacklist = self.registryValue('keywordBlacklist', channel)
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# fix shadowing by "from supybot.commands import *"
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try:
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all = __builtins__.all
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any = __builtins__.any
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except AttributeError:
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all = __builtins__['all']
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any = __builtins__['any']
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title = getattr(entry, 'title', '')
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description = getattr(entry, 'description', '')
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if whitelist:
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if all(kw not in title and kw not in description
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for kw in whitelist):
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return False
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if blacklist:
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if any(kw in title or kw in description
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for kw in blacklist):
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return False
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return True
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_normalize_entry = utils.str.multipleReplacer(
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{'\r': ' ', '\n': ' ', '\x00': ''})
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def format_entry(self, channel, feed, entry, is_announce):
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key_name = 'announceFormat' if is_announce else 'format'
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if feed.name in self.registryValue('feeds'):
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specific_key_name = registry.join(['feeds', feed.name, key_name])
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template = self.registryValue(specific_key_name, channel) or \
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self.registryValue(key_name, channel)
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else:
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template = self.registryValue(key_name, channel)
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date = entry.get('published_parsed')
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date = utils.str.timestamp(date)
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s = string.Template(template).substitute(
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entry,
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feed_name=feed.name,
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date=date)
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return self._normalize_entry(s)
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def announce_entry(self, irc, channel, feed, entry):
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if self.should_send_entry(channel, entry):
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s = self.format_entry(channel, feed, entry, True)
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if self.registryValue('notice', channel):
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m = ircmsgs.notice(channel, s)
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else:
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m = ircmsgs.privmsg(channel, s)
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irc.queueMsg(m)
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##########
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# Commands
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@internationalizeDocstring
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def add(self, irc, msg, args, name, url):
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"""<name> <url>
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Adds a command to this plugin that will look up the RSS feed at the
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given URL.
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"""
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self.assert_feed_does_not_exist(name, url)
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self.register_feed_config(name, url)
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self.register_feed(name, url, True, False)
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irc.replySuccess()
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add = wrap(add, ['feedName', 'url'])
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@internationalizeDocstring
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def remove(self, irc, msg, args, name):
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"""<name>
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Removes the command for looking up RSS feeds at <name> from
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this plugin.
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"""
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feed = self.get_feed(name)
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if not feed:
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irc.error(_('That\'s not a valid RSS feed command name.'))
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return
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self.remove_feed(feed)
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irc.replySuccess()
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remove = wrap(remove, ['feedName'])
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class announce(callbacks.Commands):
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@internationalizeDocstring
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def list(self, irc, msg, args, channel):
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"""[<channel>]
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Returns the list of feeds announced in <channel>. <channel> is
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only necessary if the message isn't sent in the channel itself.
|
|
"""
|
|
announce = conf.supybot.plugins.RSS.announce
|
|
feeds = format('%L', list(announce.get(channel)()))
|
|
irc.reply(feeds or _('I am currently not announcing any feeds.'))
|
|
list = wrap(list, ['channel',])
|
|
|
|
@internationalizeDocstring
|
|
def add(self, irc, msg, args, channel, feeds):
|
|
"""[<channel>] <name|url> [<name|url> ...]
|
|
|
|
Adds the list of feeds to the current list of announced feeds in
|
|
<channel>. Valid feeds include the names of registered feeds as
|
|
well as URLs for RSS feeds. <channel> is only necessary if the
|
|
message isn't sent in the channel itself.
|
|
"""
|
|
plugin = irc.getCallback('RSS')
|
|
invalid_feeds = [x for x in feeds if not plugin.get_feed(x)
|
|
and not utils.web.urlRe.match(x)]
|
|
if invalid_feeds:
|
|
irc.error(format(_('These feeds are unknown: %L'),
|
|
invalid_feeds), Raise=True)
|
|
announce = conf.supybot.plugins.RSS.announce
|
|
S = announce.get(channel)()
|
|
for name in feeds:
|
|
S.add(name)
|
|
announce.get(channel).setValue(S)
|
|
irc.replySuccess()
|
|
for name in feeds:
|
|
feed = plugin.get_feed(name)
|
|
if not feed:
|
|
plugin.register_feed_config(name, name)
|
|
plugin.register_feed(name, name, True, False)
|
|
feed = plugin.get_feed(name)
|
|
plugin.announce_feed(feed, True)
|
|
add = wrap(add, [('checkChannelCapability', 'op'),
|
|
many(first('url', 'feedName'))])
|
|
|
|
@internationalizeDocstring
|
|
def remove(self, irc, msg, args, channel, feeds):
|
|
"""[<channel>] <name|url> [<name|url> ...]
|
|
|
|
Removes the list of feeds from the current list of announced feeds
|
|
in <channel>. Valid feeds include the names of registered feeds as
|
|
well as URLs for RSS feeds. <channel> is only necessary if the
|
|
message isn't sent in the channel itself.
|
|
"""
|
|
announce = conf.supybot.plugins.RSS.announce
|
|
S = announce.get(channel)()
|
|
for feed in feeds:
|
|
S.discard(feed)
|
|
announce.get(channel).setValue(S)
|
|
irc.replySuccess()
|
|
remove = wrap(remove, [('checkChannelCapability', 'op'),
|
|
many(first('url', 'feedName'))])
|
|
|
|
@internationalizeDocstring
|
|
def rss(self, irc, msg, args, url, n):
|
|
"""<name|url> [<number of headlines>]
|
|
|
|
Gets the title components of the given RSS feed.
|
|
If <number of headlines> is given, return only that many headlines.
|
|
"""
|
|
self.log.debug('Fetching %u', url)
|
|
feed = self.get_feed(url)
|
|
if not feed:
|
|
feed = Feed(url, url, True)
|
|
if irc.isChannel(msg.args[0]):
|
|
channel = msg.args[0]
|
|
else:
|
|
channel = None
|
|
self.update_feed_if_needed(feed)
|
|
entries = feed.entries
|
|
if not entries:
|
|
s = _('Couldn\'t get RSS feed.')
|
|
# If we got a soft parsing exception on our last run, show the error.
|
|
if feed.last_exception is not None:
|
|
s += _(' Parser error: ')
|
|
s += str(feed.last_exception)
|
|
irc.error(s)
|
|
return
|
|
n = n or self.registryValue('defaultNumberOfHeadlines', channel)
|
|
entries = list(filter(lambda e:self.should_send_entry(channel, e),
|
|
feed.entries))
|
|
entries = entries[:n]
|
|
headlines = map(lambda e:self.format_entry(channel, feed, e, False),
|
|
entries)
|
|
sep = self.registryValue('headlineSeparator', channel)
|
|
irc.replies(headlines, joiner=sep)
|
|
rss = wrap(rss, [first('url', 'feedName'), additional('int')])
|
|
|
|
@internationalizeDocstring
|
|
def info(self, irc, msg, args, url):
|
|
"""<url|feed>
|
|
|
|
Returns information from the given RSS feed, namely the title,
|
|
URL, description, and last update date, if available.
|
|
"""
|
|
try:
|
|
url = self.registryValue('feeds.%s' % url)
|
|
except registry.NonExistentRegistryEntry:
|
|
pass
|
|
feed = self.get_feed(url)
|
|
if not feed:
|
|
feed = Feed(url, url, True)
|
|
self.update_feed_if_needed(feed)
|
|
info = feed.data
|
|
if not info:
|
|
irc.error(_('I couldn\'t retrieve that RSS feed.'))
|
|
return
|
|
# check the 'modified_parsed' key, if it's there, convert it here first
|
|
if 'modified' in info:
|
|
seconds = time.mktime(info['modified_parsed'])
|
|
now = time.mktime(time.gmtime())
|
|
when = utils.timeElapsed(now - seconds) + ' ago'
|
|
else:
|
|
when = _('time unavailable')
|
|
title = info.get('title', _('unavailable'))
|
|
desc = info.get('description', _('unavailable'))
|
|
link = info.get('link', _('unavailable'))
|
|
# The rest of the entries are all available in the channel key
|
|
response = format(_('Title: %s; URL: %u; '
|
|
'Description: %s; Last updated: %s.'),
|
|
title, link, desc, when)
|
|
irc.reply(utils.str.normalizeWhitespace(response))
|
|
info = wrap(info, [first('url', 'feedName')])
|
|
RSS = internationalizeDocstring(RSS)
|
|
|
|
Class = RSS
|
|
|
|
# vim:set shiftwidth=4 softtabstop=4 expandtab textwidth=79:
|